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Old 05-12-08   #1 (permalink)
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Default Upgraded my memory to 8gigs and now it is slower?
I am wondering if more memory can actually slow down my computer? I upgraded to 8 gigs of Gskill (PC-8000) from 4 gigs of OCZ (PC-6400) and now my computer runs significantly slower. I am lost on this one....
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Old 05-12-08   #2 (permalink)
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Is it all running in dual channel mode?

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Old 05-12-08   #3 (permalink)
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I have no clue if this could be the problem, but your operating system may not support 8 gigs of memory. Vista 32 bit, for example, only supports up to 4 gigs of memory.
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Old 05-12-08   #4 (permalink)
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Originally Posted by alex98uk View Post
Is it all running in dual channel mode?
Not sure how can I check?
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Old 05-12-08   #5 (permalink)
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Originally Posted by ender475 View Post
I have no clue if this could be the problem, but your operating system may not support 8 gigs of memory. Vista 32 bit, for example, only supports up to 4 gigs of memory.
Running 64 bit vista and Ubuntu 64 bit.
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Old 05-12-08   #6 (permalink)
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How do you mean slower? Like if you run superpi, is the result slower, or does your system just seem sluggish?
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Old 05-12-08   #7 (permalink)
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Quote:
Originally Posted by phildog549 View Post
Not sure how can I check?
if all the slots are being used,then it's not dual channel. If you by chance have two 4Gb sticks running in the same colored slots,then yes it's in dual channel. For example yellow+yellow or orange+orange is dual channel OR if your running yellow+orange then it's still not dual channel. The colors are just reference.

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Old 05-12-08   #8 (permalink)
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How do you mean slower? Like if you run superpi, is the result slower, or does your system just seem sluggish?
I run Matlab a lot and when I had 4 gigs my code took 11 secs and now that I have 8 gigs it takes 21 secs! Windows Vista also downgraded my memory performance.
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Old 05-12-08   #9 (permalink)
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When I look at CPU-Z it says the memory is in dual channel and running at 400mhz.
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Old 05-12-08   #10 (permalink)
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Quote:
Originally Posted by phildog549 View Post
I run Matlab a lot and when I had 4 gigs my code took 11 secs and now that I have 8 gigs it takes 21 secs! Windows Vista also downgraded my memory performance.
it's because you're not using dual channel anymore.

Quote:
Originally Posted by phildog549
When I look at CPU-Z it says the memory is in dual channel and running at 400mhz.
nevermind :/

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